Two London Transport AEC RT double-decker buses, prototype RT1 of 1939 together with RT4825, the last built in 1954, on display at Wisley Airfield by the London Bus Preservation Trust based at Cobham Bus Museum, and London Transport Museum, Covent Garden. RT1 was the subject of a successful £150,000 appeal which prevented it from being sold abroad, and preserved it as part of the national heritage.